APA (7e ed.) Bronvermelding

Young, S. L. (2011). Craving earth: Understanding pica : the urge to eat clay, starch, ice, and chalk. Columbia University Press.

Chicago (17e ed.) Bronvermelding

Young, Sera L. Craving Earth: Understanding Pica : The Urge to Eat Clay, Starch, Ice, and Chalk. New York: Columbia University Press, 2011.

MLA (9e ed.) Bronvermelding

Young, Sera L. Craving Earth: Understanding Pica : The Urge to Eat Clay, Starch, Ice, and Chalk. Columbia University Press, 2011.

Let op: Deze citaties zijn niet altijd 100% accuraat.